21160755

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:257

約数の個数: 96

約数和(自身を含む): 47443968

約数和(自身を除く): 26283213

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 31, 33, 35, 45, 55, 63, 77, 93, 99, 105, 155, 165, 197, 217, 231, 279, 315, 341, 385, 465, 495, 591, 651, 693, 985, 1023, 1085, 1155, 1379, 1395, 1705, 1773, 1953, 2167, 2387, 2955, 3069, 3255, 3465, 4137, 5115, 6107, 6501, 6895, 7161, 8865, 9765, 10835, 11935, 12411, 15169, 15345, 18321, 19503, 20685, 21483, 30535, 32505, 35805, 42749, 45507, 54963, 62055, 67177, 75845, 91605, 97515, 107415, 128247, 136521, 201531, 213745, 227535, 274815, 335885, 384741, 470239, 604593, 641235, 682605, 1007655, 1410717, 1923705, 2351195, 3022965, 4232151, 7053585, 21160755]

約数ペア:

[(1, 21160755), (3, 7053585), (5, 4232151), (7, 3022965), (9, 2351195), (11, 1923705), (15, 1410717), (21, 1007655), (31, 682605), (33, 641235), (35, 604593), (45, 470239), (55, 384741), (63, 335885), (77, 274815), (93, 227535), (99, 213745), (105, 201531), (155, 136521), (165, 128247), (197, 107415), (217, 97515), (231, 91605), (279, 75845), (315, 67177), (341, 62055), (385, 54963), (465, 45507), (495, 42749), (591, 35805), (651, 32505), (693, 30535), (985, 21483), (1023, 20685), (1085, 19503), (1155, 18321), (1379, 15345), (1395, 15169), (1705, 12411), (1773, 11935), (1953, 10835), (2167, 9765), (2387, 8865), (2955, 7161), (3069, 6895), (3255, 6501), (3465, 6107), (4137, 5115)]